1. Trouble with the game?
    Try the troubleshooter!

    Dismiss Notice
  2. Issues with the game?
    Check the Known Issues list before reporting!

    Dismiss Notice
  3. Before reporting issues or bugs, please check the up-to-date Bug Reporting Thread for the current version.
    0.35 Bug Reporting thread
    Solutions and more information may already be available.

Why do the drivetrains have torsion bars?

Discussion in 'Troubleshooting: Bugs, Questions and Support' started by ThreeDTech21, May 1, 2020.

  1. ThreeDTech21

    ThreeDTech21
    Expand Collapse

    Joined:
    Sep 27, 2013
    Messages:
    1,616
    Some cars and trucks have torsion bars in the drivetrain near the drive shafts, I can’t find any info online about torsion in a drive system only on the suspension, is torsion an inherent property of drivetrains in general?
     
  2. ARES IV

    ARES IV
    Expand Collapse

    Joined:
    May 6, 2019
    Messages:
    639
    Good question... I have also wondered about this.
     
  3. TrackpadUser

    TrackpadUser
    Expand Collapse

    Joined:
    Aug 24, 2019
    Messages:
    505
    Torsion bars in the drivetrain?

    Do you mean Torsion Reactors?
     
  4. sjbphoto

    sjbphoto
    Expand Collapse

    Joined:
    Sep 13, 2014
    Messages:
    432
    Are you talking about in game or irl? If you are talking in-game, I think its just a certain type of beam that they use in some applications other than suspension.
     
  5. ThreeDTech21

    ThreeDTech21
    Expand Collapse

    Joined:
    Sep 27, 2013
    Messages:
    1,616
    yes Torsion Reactors
     
  6. TrackpadUser

    TrackpadUser
    Expand Collapse

    Joined:
    Aug 24, 2019
    Messages:
    505
    I don't fully understand them either, but they're not really the same as torsion beam, as they're related to reaction torques, something that exists in every single IRL driveline..

    This is the best source of information I've been able to find.
    https://beamng.com/threads/wth-is-a-torsion-reactor.49327/
     
  7. ThreeDTech21

    ThreeDTech21
    Expand Collapse

    Joined:
    Sep 27, 2013
    Messages:
    1,616
    makes sense, the metal in a driveline is subject to twist forces, cool that BeamNG simulates even that detail
     
  8. ARES IV

    ARES IV
    Expand Collapse

    Joined:
    May 6, 2019
    Messages:
    639
    I have read that other topic but to be honest I still dont quite understand what those torsion reactors do in practise.
     
  9. Diamondback

    Diamondback
    Expand Collapse
    Vehicle Systems Lead
    BeamNG Team

    Joined:
    Apr 8, 2014
    Messages:
    1,966
    They are used as endpoints for applying torsional reaction forces from the powertrain.
    Ideally that would happen at each and every component, but that's not very practical. So instead there's a bunch of dedicated points where all of the forces act.
     
    • Informative Informative x 3
  10. ThreeDTech21

    ThreeDTech21
    Expand Collapse

    Joined:
    Sep 27, 2013
    Messages:
    1,616
    Amazing! I cant think of another game that accounts for such details in a drivetrain. So the effect of removing the Torsion Reactors from a drivetrain would be unrealistically stiffness right?
     
    • Agree Agree x 2
  11. TrackpadUser

    TrackpadUser
    Expand Collapse

    Joined:
    Aug 24, 2019
    Messages:
    505
    Reaction torque =/= drivetrain torsional rigidity.

    Reaction torques are what causes things body roll under acceleration on vehicles equiped with live axles.
     
    • Informative Informative x 1
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice